Metallic reenforcing core for golf-club shafts and the like, and method of making the same



March 16 1926.

METALLTC REENFORCING CORE FOR GOLF CLUB SHAFTS AND THE LIKE AND METHODOF MAKLNG THE SAME Filed July 17 1925 H. G. BARRETT Patented Mar. 16,1926 UNITED STATES HAROLD G.

PATENT OFFICE.

BARRETT, OF WILMIETTE, ILLINOIS ASSIGNOR T0 BARBARITE CORPORA- 'IION, OFCHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

METALLIC REENFORCING- CORE FOR GOLF-CLUB SHAFTS AND THE LIKE, AND METHODOF MAKING THE SAME.

Application filed July 17, 1925. Serial No. 44,225.

To all whom it may concern:

Be it known that I, HAROLD G. BAnnn'rr, a citizen of the United States,residing at /vilmette, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Metallic ReenforcingCores for Golf-Club Shafts and the like, and Methods of Making the Same,of which the following is a specification.

This invention relates to improvements in shafts for golf clubs and thelike, but more specifically the invention relates to an improvedmetallic core for re-enforcing wooden shafts of this character, therebyenabling the use of low grade wood in the manufacture of the shaft.

A further objectr is to provide an improved re-enforced wooden shaft forgolf clubs and the like which will combine all of the attributes ofmetal and the usual wooden shafts, and at thesame time elimi nate thedisadvantages of both.

To the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in substantially the construction, combination and arrangementof the several parts hereinafter more fully described and claimedandshown in the accompanying drawing illustrating this invention, and inwhich Figure 1 is a side elevation of a golf club having a shaftconstructed in accordance with the principles of this invention appliedthereto.

Figure 2 is a detail cross sectional view of two of the wooden membersfrom which the shaft is constructed.

Figure 3 is a view similar to Fi ure 2, showing the wooden members assemled.

Figure 4 is a View similar to Figure 3 showing the channel reamed outfor the reception of the core.

Figure 5 is a*pcrspective view of the metallic core.

Figure 6 is a cross sectional view of the metallic core.

Figure 7 is a cross sectional view of the wooden members of the shaftwith the metallic re-enforcing core in position'therewood or the like,and each of the pieces isprovided with a longitudinal channel 16 openingthrough one face thereof. These members 15 are adapted to be placedtogether so that the channel in each registers with the channel in theother to form an opening extending lengthwise of the shaft to be formed.

The members 15 are secured together in any suitable manner such as bymeans of glue or cement.

After the parts have been assembled as shown in Figure 3 the openingformed by the channels 16 is reamed out. from one end of the members 15as at 17, to form a tapermg opening.

A metallic re-enforcing core designated generally by the referencenumeral 18 is provided and is constructed of any suitable materialpreferably tempered metal, and of any suitable gage or thickness, havingsome inherent resiliency. 1

The core 18 is split longitudinally as at 19 for the entire length ofthe core and the edges of the split portion are turned in wardly as at20 to form inwardly projecting flanges, and the natural resiliency ofthe core 18 is such that the flanges 20 will, when the core is notinserted in the shaft,

separate the flanges 20.

The core 18 is preferably tapered and is adapted to be inserted into theshaft or the members 15 from which the shaft is formed, by passing intoone end of the channel 16,

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Mmlll and the core is driven into the channel during; which time thecore is gradually contracted until'iit is fully seated, at which timethe adjacent faces of the. flanges 20 will ahut each other as shown inFigure 7'.

The natural resiliency of the core 18 will hold the same firmly againstthe Wall of the channel and the flanges 20 abutting each other willprevent the core fron'i collapsing While being driven into the shaft."

After the core has been thus seated the members 15 are then shaped toform the shaft. by turning down the member 15 to the desired diameter.

The core is preferably anchored adjacent its ends to the shaft 15 sothat the shaft Will have the desired torque and at the same time possessthe desired resiliency and llenibility.

ilrny suitable means may he provided for thus anchoring; the core andshaft such as a fastening screw orbolt ill which passes through theshaft and the core and preferahly has threaded ettreniity Elli which isthreaded into a portion of the shaft.

llsimilar fastening; device i jil may he provided adjacent the other endof the shaft for securing that end of the shalt and core together Whilethe internicdia i ortion of the ehaft and core between. tl thing;devices 521 and are detached our each other so as to permit of a slightrelative movement between the shaft and the core thereby rein during itpossihle to uroduce the necessary toraue in the shaft ithout causing"the shaft to hi alt and at the same time the shaft. will possess theneon stillness and rigidity as Well tensile 'lhe flat a fill may he othroughout m he l he of incrcasii. shaft to the other so that in thesame amount he provided at o: is at the other lin. the form.

' l0 and a L l in t cause it to hind upon the Wall of the opening in theshaft in which the core is located.

llith this improved construction it Will also he manifest that a shaftfor golf clubs and the like may be produced from Wood of low grade andquality, and While the shaftis shown as being constructed of two sections it is obvious that any number of sections may he provided.

l l hile the preferred forms of the invention have been herein shown anddescribed it is to he understood that 'arious changes may be made in thedetails of construction and in the combination and arrangement of theseveral parts, Within the scope of the claims, "Without departing fromthe spirit of this invention.

ll hat is claimed as. new is 1.. ll. shaft; for golf clubs and the likecom-- prising plurality of wooden strips secured together and a hollowlongitudinally split metallic core contracted and surrounded lay thesaid strips.

ll. shaft for golf eluhs and the like con'iprising a plurality of Woodenstrips cured together, and a. hollow longitudinally split metallic corecontracted and euriaiuuded by the said strips, the edges of the aplitportion of the core abutting each other.

ll. shaft for y l cluhs and the like comprising a plurality of woodenstrips secured to rethcr a hollow longitudinally split metallic 0t. econtracted and surrounded lay the said strips, and llanges along; theedges of the split portion of the core, the said llangcs abutting eachother when the core is contracted.

i shaft for ell? clubs and the like coniprlsiiug; a plurality of Woodenstri isse cured together, a hollow lo itudinally split metallic corecontra d urrounded hy the said strips, the t i of the split you tion ofthe core abu and means adiachill; the ends of the core for securing thea nlura ii tag r and lll inc

' rte flanges on adjacent edges of the core sections abutting.

8. A shaft for golf clubs and the like comprising a plurality of woodenstrips secured together, a longitudinally split hollow metallic coreclosely surrounded and housed by the said strips, laterally projectingflanges along the longitudinal edges of the split portion ofthe core,the proximate flanges on adjacent edges of the core, sections abutting,and means securing the ends of the core and the'shaft together, theportions of the core and shaft intermediate the said securing meansbeing free for slight relative rotary movement.

9. A shaft for golf clubs and the like embodying a plurality of woodenstrips sesured together, and a split resilient metallic core contractedand surrounded by said strips, the longitudinal edges of the coreabutting, the inherent resiliency of the core tending normally toseparate the said edges. 10. A shaft for golf clubs and the likeembodying a plurality of wooden strips secured together, a splitresilient hollow metallic cor-e contracted and surrounded by saidstrips, and flanges along the edges of the split portion of the core,the inherent reslliency of the core tending to separate the saidflanges, the said strips surrounding and contracting the said core tocause the said flanges to abut.

11. A shaft for golf clubs and the like 0111- means adjacent the endsonly of the core for fastening the core and strips against relativerotary movement.

19. A shaft for golf clubs and the like emhodying a plurality of woodenstrips secured together. a split resilient hollow metallic corecontracted and surrounded by said strips, flanges along the edges of thesplit portion of the core, the inherent resiliency of the core tendingto separate the said flanges, the I ly split metallic core to cause theed es of the core to abut, and then shaping t e exterior of the shaft.

14. The method ofconstructing shafts for golf clubs and the like whichconsists in pro viding a non-metallic hollow shaft, then forcing intothe shaft a hollow longitudinally split resilient metallic core tocontract the core and cause the longitudinal edges of the split portionof the core to abut, and then shaping the exterior of the shaft.

15. The method of constructing shafts for golf clubs and the like whichconsists in providing a plurality of strips of wood, then longitudinallygrooving the strips, then securing the strips together to form a hollowwood shaft, then forcing into the shaft from the end thereof a hollowlongitudinally split ,metallic core to cause the longitudinal edges ofthe split portion of thecore to abut and remain in abutment, and thenshaping the exterior of the shaft.

16. The method of constructing shafts for golf clubs and the like whichconsists in providing a plurality of strips of wood, then longitudinallygrooving the strips, then securing the strips together to form a hollowwood shaft, then forcing into the shaft from the end thereof a hollowlongitudinally'split resilient metallic core to contract the core andcause the longitudinal edges of the split portion of the core to abutand remain in abutment, andthen shaping the exterior of the shaft.

In testimony whereof I have signed my name 'to this specification, onthis 10th day of July, A. D. 1925.

HAROLD G. BARRETT.

forcing into the shaft a hollow longitudinal-

